#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "DHT.h"

#define buzzer 10
#define DHTPIN 2
#define DHTTYPE DHT22
float h;
float t;
float f;
DHT dht(DHTPIN, DHTTYPE);

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);



void setup()   {
  Serial.begin(115200);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  display.setTextColor(WHITE);
  dht.begin();
}


void loop () {
  delay(2000);
  h = dht.readHumidity();
  t = dht.readTemperature();
  f = dht.readTemperature(true);
  if (isnan(h) || isnan(t) || isnan(f)) {
    return;
  }
  if ((h > 75) || (t > 35)) {
    digitalWrite(buzzer, HIGH);
  } else {
    digitalWrite(buzzer, LOW);
  }
  display.clearDisplay();
  display.setCursor(0, 0);
  display.println(" ");
  display.print("Humidity: ");
  display.print(h);
  display.println("%");
  display.println(" ");
  display.print("Temp: ");
  display.print(t);
  display.print("C(");
  display.print(f);
  display.println("F)");
  display.display();
}